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When to plant crocuses in Sherbrooke: 27 September – 8 November

In Sherbrooke, crocus: plant from 27 September to about 8 November. For planting stock, the places nearby include Jardin Floral (garden centre, 5 km) and Jardin Eden (garden centre, 9 km); addresses and opening hours are below.

Bulbs are best planted early in the window: late-planted bulbs may flower later or less well. Late planting works only while the soil can be dug. Mulch after planting.

The date is about two weeks before the average daily temperature here falls below 0 °C (ten years of weather): an estimate, not the day the ground freezes, and a cold spell can freeze it earlier. Sources: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Crocus in Sherbrooke: soil, season and weather

Nights then average below 0 °C in November–April; the coldest, January, averages -12.9 °C.

Planting27 September – 8 November
First autumn frost27 October
Coldest nightsJanuary, -12.9 °C
Soil back at 1 °C in spring27 March
Daylight11:57 on 27 September
Daylight at the winter solstice8:43

The same dates in Sherbrooke hold for Garlic, Tulip, Daffodil and Hyacinth.

Crocus in Sherbrooke: depth, winter cold, pests and pets

Plant Dutch crocuses (Crocus vernus) about 12 cm deep and 9 cm apart; smaller species go 7–10 cm deep (RHS).

In Sherbrooke the average daily temperature stays at 10 °C or lower for about 29 weeks a year (our estimate from ten years of monthly weather). For this bulb Wisconsin Horticulture Extension gives a cold period of 15–17 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Crocuses multiply on their own (they naturalise); in a lawn, hold off mowing until their leaves die back (RHS).

Birds, squirrels and rodents damage crocuses; planting under metal mesh may reduce losses (RHS). Spring crocus gives dogs and cats vomiting and diarrhoea; do not confuse it with autumn crocus (Colchicum), which is very toxic (Pet Poison Helpline).

Sources: RHS, Wisconsin Horticulture Extension, Pet Poison Helpline.

Crocus in nearby cities

Around Sherbrooke, Montpelier is 10 days earlier and Burlington 7 days later.

CityDistanceDateDifference
Trois-Rivières116 km29 September – 8 November2 days later
Montreal132 km2 October – 13 November5 days later
Montpelier137 km17 September – 11 November10 days earlier
Burlington146 km4 October – 23 November7 days later
Quebec City165 km28 September – 4 November1 day later
Augusta206 km4 October – 20 November7 days later

Where to buy crocus for planting in Sherbrooke

Planting stock goes into the ground from 27 September to about 8 November; buy it before that. Within 15 km of Sherbrooke OpenStreetMap lists 3 garden centres, 2 markets and 5 farm shops (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Sherbrooke?

In Sherbrooke, crocus: plant from 27 September to about 8 November. Bulbs are best planted early in the window: late-planted bulbs may flower later or less well. Late planting works only while the soil can be dug. Mulch after planting.

When is the last spring frost in Sherbrooke?

Last spring frost around 8 May, first autumn frost around 27 October.

Other crops in Sherbrooke, with their dates